HP digital sender 9200c Manuale Di Servizio
Calibrating the scanner
The purpose of the scanner calibration process is to compensate for offsets in the scanner imaging
system (carriage head) for ADF and flatbed scans. Because of mechanical tolerances, the scanner
carriage head might not read the position of the image accurately. During the calibration procedure,
scanner offset values are calculated and stored. The offset values are subsequently used when
producing scans so that the correct portion of the scanned image is obtained by either adding or
subtracting the number of pixels that are indicated in the offset from the lines or rows of the image.
system (carriage head) for ADF and flatbed scans. Because of mechanical tolerances, the scanner
carriage head might not read the position of the image accurately. During the calibration procedure,
scanner offset values are calculated and stored. The offset values are subsequently used when
producing scans so that the correct portion of the scanned image is obtained by either adding or
subtracting the number of pixels that are indicated in the offset from the lines or rows of the image.
Scanner calibration should only be carried out if you notice offset problems with the scanned images.
The scanner is calibrated before it leaves the factory and normally should not need to be calibrated
again.
The scanner is calibrated before it leaves the factory and normally should not need to be calibrated
again.
NOTE
The scanner should be recalibrated any time the ADF is removed or replaced.
Before calibrating the scanner, you must print the calibration target on a printer.
To print the calibration target
1
and follow the instructions to download the calibration
target. The calibration target file is also available on the documentation CD that came with the
device. The file name is CALIBRATION.PDF or CALIBRATION.DOC.
device. The file name is CALIBRATION.PDF or CALIBRATION.DOC.
Calibrating the scanner
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